provides macros manipulating strings of tokens. For a basic use, tokens can be alphanumeric chars, but the macros can also be useful for manipulating tokens

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How to include part of an external git hash as text inside a document?

This is my first time asking a question on a site like this. Please tell me if I should do something differently, thanks! I want to include a short version of the latest commit hash from git as a ...
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Why can't I get a conditional command to work in a macro invoked within a tikzpicture?

I wanted to create a macro that can be invoked in the middle of a tikz path and behave differently, conditional on one of the arguments. Here is an example document: \documentclass[a4paper]{amsart} ...